Issues with starting the client

I have to start the launcher 3-4 times on average before it connects me with the account login screen. When i start up league, it goes directly to the page with the "Launch"-button. Then that window disappears, but the account login page doesnt show. I need to hit the shortcut again and launch about 3-4 times (every time canceling the still running launcher). after the 3rd or 4th time finally the login screen comes up. Does anyone have a solution to that problem or experienced the same issue? Best regards, Aero